chr12-53158596-C-A

Variant names:

• chr12-53158596-C-A
• rs141240527
• NM_001244705.2:c.1397G>T

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001244705.2(CSAD):​c.1397G>T​(p.Arg466Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,878 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R466H) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: CSAD NM_001244705.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.55
• Publications: 0 publications found

Genes affected

CSAD (HGNC:18966): (cysteine sulfinic acid decarboxylase) This gene encodes a member of the group 2 decarboxylase family. A similar protein in rodents plays a role in multiple biological processes as the rate-limiting enzyme in taurine biosynthesis, catalyzing the decarboxylation of cysteinesulfinate to hypotaurine. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Sep 2011]

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.944

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001244705.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CSAD	NM_001244705.2	MANE Select	c.1397G>T	p.Arg466Leu	missense	Exon 17 of 17	NP_001231634.1	Q9Y600-1
	CSAD	NM_015989.5		c.1478G>T	p.Arg493Leu	missense	Exon 17 of 17	NP_057073.4
	CSAD	NM_001244706.2		c.698G>T	p.Arg233Leu	missense	Exon 8 of 8	NP_001231635.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CSAD	ENST00000444623.6	TSL:1 MANE Select	c.1397G>T	p.Arg466Leu	missense	Exon 17 of 17	ENSP00000415485.1	Q9Y600-1
	CSAD	ENST00000267085.8	TSL:1	c.1478G>T	p.Arg493Leu	missense	Exon 17 of 17	ENSP00000267085.3	Q9Y600-3
	CSAD	ENST00000453446.6	TSL:1	c.1397G>T	p.Arg466Leu	missense	Exon 16 of 16	ENSP00000410648.2	Q9Y600-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461878 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727238

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53414

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1112008

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.93
BayesDel_addAF	Pathogenic	0.39	D
BayesDel_noAF	Pathogenic	0.32
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.86	D
Eigen	Pathogenic	0.76
Eigen_PC	Uncertain	0.63
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.95	D
M_CAP	Pathogenic	0.46	D
MetaRNN	Pathogenic	0.94	D
MetaSVM	Uncertain	0.41	D
MutationAssessor	Pathogenic	3.1	M
PhyloP100		7.6
PrimateAI	Benign	0.47	T
PROVEAN	Pathogenic	-6.8	D
REVEL	Pathogenic	0.76
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.91
MutPred		0.67		Gain of catalytic residue at F464 (P = 0.002)
MVP		0.90
MPC		0.69
ClinPred		1.0	D
GERP RS		4.5
Varity_R		0.91
gMVP		0.94
Mutation Taster		=5/95	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs141240527; hg19: chr12-53552380;